207252640 has 96 divisors (see below), whose sum is σ = 562875264. Its totient is φ = 70640640.

The previous prime is 207252613. The next prime is 207252649. The reversal of 207252640 is 46252702.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 207252599 and 207252608.

It is not an unprimeable number, because it can be changed into a prime (207252649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235882 + ... + 236758.

It is an arithmetic number, because the mean of its divisors is an integer number (5863284).

Almost surely, 2^207252640 is an apocalyptic number.

207252640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 207252640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281437632).

207252640 is an abundant number, since it is smaller than the sum of its proper divisors (355622624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

207252640 is a wasteful number, since it uses less digits than its factorization.

207252640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110 (or 1102 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 207252640 is about 14396.2717395859. The cubic root of 207252640 is about 591.7887303098.

The spelling of 207252640 in words is "two hundred seven million, two hundred fifty-two thousand, six hundred forty".